Intro to GI

Question 1

source

• Endocrine cells in duodenal mucosa

Stimulus

• Acid in the duodenum

functions

• Gastric emptying
• gastric secretion
• NaHCO3 from pancreas
• NaHCO3 bile from liver

Answer 1

secretin

Question 2

Source

• Endocrine cells in duodenal mucosa

Stimulus

• Nutrients in duodenum, especially fats

Functions

• gastric emptying
• gastric secretion
• digestive enzymes from the pancreas
• GB contraction
• relaxation of sphincter of oddi

Answer 2

CCK

Question 3

Source

• Endocrine cells in duodenal mucosa

Stimulus

• Fat, acid, hypertonicity, glucose and distention in duodenum

Functions

• gastric emptying
• gastric secretion
• • insulin secretion

Answer 3

Gastric inhibitory peptide